Sound-producing device.



B. P. & P. I. REMY.

SOUND PRODUCING DEVICE.

APPLICATION FILED JULY 28, 1910 1,016,035, Patented Jan.30, 1912.

I 3'5 mg, v 02, {iii 1 46 Air 10 lVfT/VESSES: LVVEkVTOR I Fmmh Remy andBgpjamin Ben]. L

ATTORNEY.

. STATES PATENT OFFICE.

BENJAMIN P. REMY AND FRANK I. REMY, OF ANDERSON, INDIANA, ASSIGNORS TOTHE REMY ELECTRIC COMPANY, OF ANDERSON, INDIANA, A CORPORATION.

SOUND-PRODUCING DEVICE.

Patented Jan.- 30,1912.

Application filed July 28, 1910. Serial No. 574,264.

To all whom, it may concern:

Be it known that we, BENJAHINP. REMY and FRANK I. Rmir, of Anderson,count of Madison, and State of Indiana, have inwhere it is desired toproducea loud noise by the use of an electric current.

The chief feature of the invention s the arrangement of the armature andstriker so that the striker'is normally separated from a noise producingdiaphragm and in position when actuated to deliver blows to thediaphragm.

The nature of the invention will be understood from the accompanyingdrawings and the following description and'claim.

In the drawings Figure 1 is a central vertical section throu h thedevice in idle position and with a diagram of the circuit associatedtherewith. Fig. 2 is the same showing the device in operation. Fig. 3 isa section on-the line 3-3 of Fig. 1.

The cylindrical housing 10 is provided with ears 11 for securing thesame to a suitable portion of an automobile or other structure. Thehousing is closed at one end by a removable disk or plate 12, and on itsother end a plate 13 issecured by the screws 14, and said plate carriesthe hornlike member 15 which leads at its inner end from a centrallylocated opening in the plate 13, through which the sound waves issue,and the member flares outwardly therefrom. Betweenthe housing 10 andplate 13 a vibratory diaphragm 16 is secured along its edge so that thecentral portion is free to yield audible vibrations when centrallystruck by the means hereafter explained.

"Within the housing 10 there is an electi'omagnet consisting of thewinding 20 sur-' rounding a tube 21 and surrounded by an outer tube 22and having end disks 23. The inner tube 21 is preferably of non-magneticmaterial, while the other parts 22 and 23 are preferably of iron. Thisis, a plunger electromagnet, and, therefore, hasa plunger armature 24,which extends about halfway through the magnet where it is reduced, andthe reduced portion is externally I threaded to-receive the striker 25,which is made of non-magnetic material. The outer end of the armaturehas a projection 26, and the armature extends through an open mg in thecontactspring plate 27', which is secured bythe screws 28 to aprojection 29 from the housing. central inwardly .extending portion 30which supports the electromagnet. The opening in the spring plate 27 isof less diameter than. the projection 26 on the armature. The,armatureQis withdrawn by a spring 130 which is connected with theflanged end of the armature and to the plate 12.

I The electric circuits are as follows: There is a battery 32 or othersource of electricity from which -a Wire runs to a switch 34, and from;that switchthe wire 35 extends to the binding post 37 in the housing.The

current can pass through the housing to the spring 27 which is made ofconducting material, and on its free end it has a .contact 38 adapted toengage the contact pin '39 held by an arm 40, which is secured on themetal screw 41 running through the insulation 42 in the arm 43 extendingup from the lower side of the housing. The wire 44 runs from the screw41 to the magnet, and the wire 45 runs from the magnet to the bindingpost 46, and the wire 47 runs from that binding post to the battery. Thebinding post 46'i's insulated from the'hous- 1ng. Normally the spring 27holds its contact piece 38-111 engagement with the contact 39 and thusicloses the circuit. When the switch 34 is closed, as in Fig. 2, thecur-v rent passing through the magnet energizes it and moves thearmature to the right, so that the striker 25 centrally strikes thediaphragm. This movement of the armature causes the projection 26thereon to engage the spring 27 and move itto the position shown in Fig.2 and break the circuit. -As soon as this occurs the spring 130 returnsthe armature, which permits the plate 27 to close the circuit. Hence thedevice, as soon 'as the switch 34 is closed, will automatically make andbreak the circuit and reciprocate the striker and vibrate the diaphragm.The

reciprocation of the striker is so rapid that The housing has a itdelivers to the diaphragm a rapid succession of blows, causing it toemit .a loud sound.

We claim as our invention:

- A sound producing device including a vibratory diaphragm, anelectro-magnet, a plunger armature carrying a striker, and having alateral projection on its outer end, a spring for holding said armatureand striker normally out. of engagement With the diaphragm, an electriccircuit through the magnet and a spring contact plate which normallycloses the circuit and is provided with a hole through which thearmature extends so that When actuated the 15 projection of the armaturewill engagesaid spring contact plate to break the circuit.

In witness whereof, We have hereunto afiixed our signatures in thepresence of the Witnesses herein named.

BENJAMIN P. REMY. FRANK REMY.

Witnesses:

W. R. POLAND, '1. P. McDnmwo'r'r, Jr.

